Quest for Support 3


Here we proudly present the first simultaneously supported DIY 3D-Model.
It was printed by Domonoky to test the software for the dual-extruder of his Repman.

Unfortunately he had to stop the print half way - it was ment to be a model consisting of a small ball caged in 2 bigger balls with holes in them.

To check the surface of this test-model he gave it to me for dissolving the PLA.

The same procedure as last time. First heated in a waterbath and then put into the ultrasonic bath. First, I tried it with the already used chemical solution. Because of the green colour one can easy see, if it is still working.

before                                                                                                             after

A sedimentation of the green color can be observed - probably the colour adsorbs to the Lactose-salt.

After the first 35 minutes the solution was changed with a new one, wich was heated up to 70 °C.
75 minutes later the PLA was nearly totally dissolved and 135 minutes later it was finished.

after 35 min                                                                    after 75 min                                                                 ... finished!

I needed 100 ml of partly used solution and about 2 and a half hours to dissolve 5 g PLA.
In the pictures above you can see that the used chemical solution is still working, but not as good as a fresh solution.

Now it's up to Domonoky to print a complete caged ball or to show me how to print it with my dual-mendel.

...and it's up to You to build a second hot-end for your Reprap!



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  • Nice result. I've got a dual extruder setup on my mini-mendel, but didn't find a good way to disolve PLA (rapidly). I also tried NaOH in a ultrasonic cleaner. Also, I never really got the firmware for multiple head running very well because only old versions are published ( ).<br /><br />What exactly is "the already used chemical solution" ?

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  • Wow, this is fantastic!<br />I'm exited, keep up the good work!<br />Gruß aus München,<br />Andreas

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